Improvement in prismtiwg-telegraphs



2 Sheets-Sheet l` G. N1.' PHELPS.

Printing Telegraph.

Patented June 22, 1869.

N. PETERS. Phnxwumugmpher, wasmnglun. D4 C.

A 2 Sheets-.Sheet 2 G1 M. PHELPS.

. Printing Telegraph.

lrEORGE M. PHEL'PS, OF BROOKLYN, NEW YURK.

IMPROVEMENT EN PRINTING-TELEGRAPHS.

Specification forming part et' Letters Patent No. 95,662, dated June 22, 1869.

.To all whom it may concern Be it' known that I, GEORGE M. PHELrs, of Brooklyn, in the county of Kings and State of New York, have invented and made a new and useful Improvement in Printing-Telegraphs; and I do hereby declare the following to be a full,`clear, and exact descriptipnt' the said invention, reference being had tothe annexed drawing, making part of this specification, whereinj. i

Figure l is a general plan oi'lmiy i-nstruments, showing the electric circuits, Fig. 2 is an elevation of the printing mechanism. Fig. '5 is a sectionatthe line Similar marks of reference denote 4the same parts.

This invention relates to that class ot telegraph instruments that make uselof al typewheel revolved by electricity to print upon a Strip ot' paper. i

My invention consists in a pneumatic circuit-changer, applied in such a manner that when the vibrations of the magnet that moves the type-wheel cease, the pneumatic circuitehanger operates to th row the current through a magnet that gives the impression, and asV soon as the magnet that moves the'ty'fpe-whecl is again charged, the movement produced operates the pneumatic circuitcha iger, l and throws 'the current through a, niet'that draws the roller and paper aw from the type-wheel. I also make use of a doubleacting relay that causes a movementto be given to the type-Wheel when the circuit, is broken, and another when it is closed, thereby `facilitating the operation, and causing ,the instrument to operate with greater rapidity than heretofore. y i i y In the drawing, a is a dial with signs or letters; b, the index-pointer, evolved on a center stud that is connected with `th `bindingscrew c; and d is a circuit-breaker, formed with notches corresponding in number to half the number or' characterspaces `there are around the dial a, and o is a circuit-closer on b, so that the circuit from c and c', through the main telegraph-line, is closed ,when the pointer 'b is at one letter, and broken at the next. Ilihe relay instrument, with its magnet d', is placed in the main line, and; thelocal battery c connects by the binding-screw c with both the magnets j" and g. rlhe magnet g` is in the circuit to the binding-screw g', and the magnet fin the circuit to the screw ff. The armature 3 ot' the magnet d is connected to the screw 4, and thence to the battery c. Upon the armature is a double-ended circuitcloser, 5, and (i and 7 are adjustable points on the line ot the closer 5, so that when the magnet l' is charged, the circuit is closed through 5 and 6, bindingscrews 38, and g', and the ,magnet g, and at the same time the circuit through 7, 8, j", and f is broken. Vhen the circuit through the main line and magnet d is broken, the spring 9 draws the armature -3 connecting 5 and 7. and throwing the circuit through the magnet j", so that the magnet gis operated everytime the index-pointer closes the circuit for one letter, and the magnet j when the circuit is broken in denoting the next letter. rlhe magnets f and r/ have armatures 1() and 1ln attached to a lever, 1L, that vibrates upon an axis, 12, and gives a motion of one letter or space to the type-wheel each time the icver is moved. either one way or the other, so that the revolution ot' the typewheel k and index-pointer will be isochronal. The lever lt is made with two arms, having V- shaped inclined ends or propelling pallets, as seen by dotted lines in Fig. l, and upon the arbor la of the type-wheel it is a wheel, i, with pointed teeth, the teeth being half the number of the letters or spaces on the wheel k, so that the inclined. end et' enc arm, passing in `between the pointed teeth, moves the wheel k around one letter, and then the other incline oi' the other arm moves it around the next letter as the alternate pulsations ot' electricity pass through first one geeignet and then the next. An hiking-wheel, m, is kept in contact with the type-wheel by a spring, so as to ink the surfaces of the types. The impression is made by the roller n, that is set on an arm, n', that swings upon the stud la. o and p are armatures attached to the arm n', and g and r are magnets to the respective armatures.

When the circuit is closed to q, the roller n will be brought with a Aiiiow against the type upon It, that is in positioe'i for printing, and when the magnet i' is c ged the roller n and arm 'n' will be swung hack. I allow a slight lmovement to the roller n by mounting its stud l5 upon an arm, 16, that swings upon the stud 17 on a. rihe spring i8 throws the' parts oit the type-wheel instantly that the blow is given ot' the roller and paper on the type, so that the impression will not be blurred by the movement of the type wheel. The paper (shown by blue lines in Fig. 1) passes through a guide, il, and between the roller n and a divided spring, 19, that presses on the top and bottom portions of the strip of paper. The feed-motion of the paper results from the paw] 20 taking ratchet-teeth on the roller a as that is brought back by the magnet 1'.

My pneumatic circuit-changer is provided to direct the electrical current from the battery s through the magnet r, When the typewhcel is being moved, and through the magnetq when the same stops and the impression is to be made.

An arm, t, is provided extending from the lever h, or its axis, and acting upon the inclined end of the circuit-changer n lifts that and presses up the piston a in the cylinder u. The valve 21 allows the free escape of air, and the piston is partially held up by the atmosphere, so that the circuit-closer n is relieved of its weight, and the points 22 and 23 are kept together by the spring 24, and the electrieity passes through the binding-screw 25, insulated plate t', spring 24, circuit-changer n, points 22 23, and wire to the magnet r, (to draw back the roller,) and thence to the battery s. This continues while the lever It and arm t are vibrated; but as soon as a suflicient pause occurs, the piston w descends gradually, and by its weight moves the changer t, separating 22 and 23, and closing the circuit through the insulated screw 26 and connection from the plate 27 to the magnet q, thereby breaking the circuit to the magnet r, and causing the magnet q to give the impression by a blow upon the types, as aforesaid.

The general operation of this apparatus as a whole lgvill be fullyunderstood from the foregoing, and I remark that l do not limit myselfto the precise position of the parts shown, as tile placing of them may be varied for convemence.

I am laware that a type-wheel has been moved by pawls and a ratchet-wheel; also, that an Ielectrical clock has been moved by pallets. @In my improvement the typewheel is both moved and held by alternately acting Wedge-shaped pallets.

What I claim, and desire to secure by Letters Patmt, is-

1. Ihy y' combination of a magnet, double Wed ge acting pallets, pallet-wheel, type-wheel, and printing mechanism, substantially as and for the purposes described.

2. The combination of two electro-magnets, fg, with the armatures 10 11,1ever h, pallets, wheel l, and type-wheel 7c, substantially as set forth.

3. The pneumatic circuit-chan ger, constructed substantially as specified, and combined with a magnet or magnets for giving or allowing a gradual movement when the vibration of the magnet ceases, substantiall y as set forth.

Lt. The combination of the spring 18 with the impression-roller m, swinging arm a', and electro -magnet operating the same, in the manner and for the purposes substantially as set forth.

In witness whereof I have hereunto set my signature this 31st day of August, A. i). 1868.

GEO. M. PHELPS. Witnesses:

Grills. II. SMITH, Guo. T. PINcKNnY. 

